baber/WOPTO huggingface dataset:
Patent GB-1178275-A (GB)
Title: Trepan.
IPC: B23B47/18
Filed: 1967-06-20
Abstract: 1,178,275. Drilling machine details. AUSTENAL EUROPA Inc. ZWEIGNIEDERLASSUNG KIEL. 20 June, 1967, [4 July, 1966] No. 28373/67. Heading B3C. A surgical drill includes a first shaft 2 able to be rotated by a power drive and arranged to apply the drive through clutch means 4, 7 to a second shaft 8 supporting a drill bit 12, there being stop means which engage the cranium upon penetration of the drill-bit and which then disengage the clutch means 4, 7, the stop means comprising an abutment member 26 on an axially movable non-rotatable spindle 18 which carries a second clutch means 19, 21 having first clutch member with a drive connection to the second shaft 8 and a second clutch member threadedly received on the spindle 18, the second clutch member retracting the spindle and its associated abutment member 26 against the action of a spring 17 and allowing penetration of the drill bit into the cranium only as long as both of the clutch means are engaged. As shown, the drill bit 12 extends through an aperture in the abutment member 26 and drive is engaged when the bit is pressed against the cranium so that the shaft 8 slides against the force of a spring 6 to bring clutch members 4, 7 into inter-engagement. The clutch members 19, 21 are held in inter-engagement by the pressure of the abutment member against the cranium. As drilling proceeds, and the bit 12 advances into the cranium, drive from the shaft 8 is applied via gearing 9, 16 and clutch members 19, 21 to cause (since the member 21 is screwthreaded on the spindle 18) the spindle 18 and the abutment plate to retract back from the drill bit. When the drill bit has cut through the hard material of the cranium the spring 6 causes the clutch members 4, 7 to dis-engage the drive to the bit. Centring pins 24 are provided on the abutment member and a knob 23 may be manually rotated to set the abutment member at the end of the drill bit before drilling commences.
Patent GB-815257-A (GB)
Title: New isonicotinoylhydrazine derivatives and processes for their preparation
Inventor: SLACK RONALD
IPC: C07D213/86
Filed: 1956-09-17
Abstract: The invention comprises isonicotinoylhydrazine derivatives of the formula <FORM:0815257/IV (b)/1> (wherein M represents a metal cation, or ammonium ion) and their preparation by reacting pyridine - 4 - carboxy - (5 - hydroxy - n - pentylidene) hydrazone with the appropriate metal or ammonium bisulphite or metabisulphite, or by reacting isonicotinoylhydrazine with a 5-hydroxypentenal bisulphite. Examples describe the preparation of the preferred sodium 5 - hydroxy - 1 - (1 - isonicotinoyl - 2 - hydrazino) pentane-1-sulphonate (1) by reating pyridine-4-carboxy - (5 - hydroxy - n - pentylidene) hydrazone with aqueous sodium metabisulphite and (2) by reacting isonicotinoylhydrazine with aqueous 5-hydroxypentenal sodium bisulphite, formed in situ by adding 5-hydroxypentenal to aqueous sodium metabisulphite. Substitution of potassium or ammonium metabisulphite for the sodium salt in (1) yields the corresponding potassium and ammonium derivatives.
Patent GB-250487-A (GB)
Title: Improvements in and relating to differential pressure gauge for use with flow-meters
IPC: G01F1/37
Filed: 1925-11-12
Abstract: 250,487. Klenow, E. W. R. Nov. 12, 1925. Liquid-level pressure-gauges.-The leading and trailing pipes from a Venturi tube are connected to the legs of a differential manometer which are bent so that the travel of the indicating liquid along the bent pipe will be proportional to the square root of the difference in level in the two legs measured vertically, and this is measured electrically by means of a resistance in the manometer connected up with an electric measuring- bridge in which is an electric measuring-instrument. The liquid in the manometer tube is of conducting while .the tube itself is of insulating material. A wire of high electrical resistance is drawn through the tube and passed out at points 12, 13, 14 to a Wheatstone bridge. When there is no flow through the Venturi tube the resistances in the arms of the 'bridge are all equal, and the ampere meter 17 reads zero. When flow takes place, the liquid rises in one leg and falls in the other leg of the manometer and the alteration of the resistances in the arms of the bridge is such as to cause the meter 17 to read proportionally to the flow. In order to compensate for temperature variations, a thermometer varies a resistance in the battery circuit, and in order to compensate for density variations-in the case where the fluid is air or steam-a resistance in the battery circuit is varied according to the pressure of the fluid.
Patent GB-281081-A (GB)
Title: Improvements in trousers stretchers
IPC: A47G25/66
Filed: 1926-11-15
Abstract: 281,081. Heath, F. G. Nov. 15,1926. Trouser creasers.-A creaser for insertion into trouser legs comprises two strips 1 connected at opposite ends by pairs of toggle links 10, 17 to a central rod 6, the sleeve 8 which pivotally connects the links 10 to the rod being rigidly connected to the rod, while the sleeve 15 which connects the links 17 to the rod is adapted to be moved along the rod to force the strips 1 apart by a flynut 13 screwing on the rod 6 and acting against the sleeve 15 through a coiled spring 14. Other toggle links 21 may be provided to make the creaser more rigid. The strips 1, and rod 6 may be in two parts connected together by links 3, 7, respectively, so as to permit the creaser to be folded, a sliding bolt 5 carried by one of the parts of each strip and adapted to engage a socket 4 carried on the other parts of the strips to maintain the parts in alignment being provided. Catches 25 may be provided to prevent removal of the bolts 5. A ring 23 for suspending the creaser may be fitted to one end of the rod 6.
Patent GB-978839-A (GB)
Title: Improvements in linear accelerators
Inventor: JARVIS TIMOTHY ROBERT
IPC: H05H9/02
Filed: 1962-07-26
Abstract: 978,839. Linear particle accelerators. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. June 24, 1963 [July 26, 1962], No. 28785/62. Heading H1D. In a linear particle accelerator the buncher section 3 is followed by a section 5 in which the bunches are laterally deflected by a cyclically varying field so that only selected bunches are permitted to pass through the aperture 9. As shown, the section 5 which is separated from section 3 by a drift tube 21 is an iris-loaded waveguide supporting a backward wave of E 11 mode and at a slightly different frequency from the forward E 01 wave in section 3. The number of bunches passing through aperture 9 is selected by adjustment of a variable attenuator in the input waveguide 25 to sec-  tion 5 and the selected bunches may be further accelerated by a waveguide similar to section 3. The electron gun is energized for a specific time interval after energization of sections 3 and 5. The particles accelerated may be positive particles instead of electrons.
Patent GB-1284327-A (GB)
Title: Improvements in or relating to miniature switches
IPC: H01H9/22
Filed: 1970-06-15
Abstract: 1284327 Electric switches without quick action SIEMENS AG 15 June 1970 [16 June 1969] 28808/70 Heading H1N In a miniature electric switch for attachment to a printed-circuit board, a bridging contact spring 2, Fig. 4, is mounted on a carrier 22 rotatable alternately about pivot pins 4, Fig. 2, engageable in grooves of a toothed strip 5 whereby the carrier is moved rectilinearly between guide faces 20 during rotation to engage the spring 2 with fixed wire contacts 3 arranged opposite each other in the switch housing 6. The carrier head 21 has a slot 24 for engagement by a screw-driver and the assembly is covered by a transparent cover 14, hinged to the base 6 and carrying indicia. Several contact carriers 22 may be arranged on a single base 2, the longitudinal movement of each being limited by stops (18), Fig. 1 (not shown).
Patent GB-316813-A (GB)
Title: Translucent pipe
IPC: F16L9/10
Filed: 1928-10-08
Abstract: 316,813. Schaefer, C., and Wolfshol, W. Oct. 8, 1928. Vitreous tubes. - A pipe for conducting gas, water, &c., and intended to be buried in the ground, is made of non-transparent double silicates e.g. glass capable of being made translucent by lamps of high candle-power, metal wire, gauze, or tubing being incorporated during the manufacture.
Patent GB-804600-A (GB)
Title: Improvements in and relating to chimney cowls
IPC: F23L17/02
Filed: 1956-09-21
Abstract: 804,600. Chimney cowls. BURGER, A., and BURGER, H., [trading as KAMINBAU BURGER'S SOHN], Sept. 21, 1956 [Sept. 24, 1955], No. 28928/56. Class 25 A cowl comprises superposed hollow members 11 which form between them inclined passages 12. An air distributer 230 is mounted in the top cowl member which has drain passageways 236 in its side walls. Specification 768,383 is referred to.
Patent GB-502265-A (GB)
Title: Apparatus for closing the inlets of tanks
IPC: E03B11/02
Filed: 1937-10-22
Abstract: 502,265. Valves. MULLER, J. Oct. 22, 1937, No. 28932. Convention date, Oct. 22, 1936. [Class 135] [Also in Group XVII] The inlet of a tank is closed automatically when the desired height is reached by means of a permanently immersed body 17, Figs. 1, 2 and 3 which forces a cap 14 into closing position when a trigger mechanism is released. Such mechanism, in the form shown in Fig. 1, consists of an immersed body 1 acting on a pile 2 of graphite washers 3 carrying an electric current, the change in which is utilized to actuate a pointer 4 which contacts an adjustable pointer 6 to close the circuit of an electromagnet 11 which, by attracting an armature 27 on a bell-crank 12 disengages a pivoted plate c from a pin d on a rod 13 carrying the closure. A safety device consisting of float body 21 and lever 22 acts to disengage plate c should the electromagnetic device not function. These mechanisms may be rendered inoperative by a spring finger-piece 23 which acts on a lever 26 to positively raise the cap 14. In the form shown in Fig. 2, movement is transmitted from an immersed body 1 through a deformable container 29 and hydraulic transmission 30 to a deformable container 31 between which and a member 34 of a system 32, 33, 34 which compensates for atmospheric variation, a link e is carried bearing a pin 40<1> which oscillates a finger 36 about a fixed pivot 40. The vertical position of this finger is adjusted preliminarily by a cam 35 carrying a pointer 6, when the required level is reached, a level 37 contacts a pin 41 in another compensated hydraulic circuit 43-48 and actuates the release mechanism of the closure 1 as before. In the form shown in Fig. 3, the trigger mechanism is actuated by a bevelled finger 36 the position of the bevel being preliminarily adjusted by a pointer 6 carried by a cam 35. The rising of immersed body 1 is transmitted through a cable 55, normally drawn down by weights 52, 53, to a stop 41, which, when the predetermined level is reached, contacts bevel 37 and causes finger 36 to actuate a stop 59 on cable 60 which draws pin 61 on bellcrank 12 upwards.
Patent GB-797191-A (GB)
Title: Matrix for ion exchange resins
Inventor: TSUNODA YOSHIO
IPC: C08F291/00
Filed: 1954-10-07
Abstract: A three-dimensional cross-linked synthetic resin matrix having at least two dimensions each in excess of one cm., is formed by copolymerizing a polyvinylaryl and/or polyolefinic compound with a monomer/polymer solution of a monovinyl aryl and/or monovinyl aliphatic compound monomer containing no free COOH groups and at least 0.1 per cent of a polymer of the monomer.  Specified monomers are styrene, vinyl toluene, vinylnaphthalene, alphamethylstyrene, ar-methylstyrene, ar-dimethylstyrene, ar-ethylvinylbenzene, ar-chlorostyrene, ar-methylvinyl naphthalene, ar-sec-butylstyrene, ar-trimethylstyrene, vinylchlorbenzene, vinylxylene, methylvinylketone, acrylic acid ester, and methacrylic acid ester. Specified poly compounds are divinyl benzene, ar-divinyltoluene, ar - divinylxylene, ar - divinylchlorobenzene, divinylnaphthalene, ar-divinylethylbenzene, trivinylbenzene, divinylether, butadiene, isoprene, dimethallyl, diallyl, and cyclopentadiene.  The polymer matrix may be formed from more than 10 per cent of the monomer compounds and less than 50 per cent of the poly compounds.  The resin may be prepared by partially polymerizing the monomeric compounds by bulk or solution polymerization so as to convert 0.1 to 60 per cent to polymer, mixing this solution with the poly compound and polymerizing by bulk or solution methods.  The matrix may be formed as a flock which is then cut into a sheet, or the sheet may be formed by polymerizing in a vessel having two facing walls of large surface area with a small clearance in between.  A plasticizer which may be added at any stage and non-polymerizable reinforcing material may also be present.  The resins may be used to form ion-exchange resins. Specifications 794,426, 795,379, 797,192 and U.S.A.  Specifications 2,366,007, 2,466,675, 2,500,149, 2,591,573, 2,591,574, 2,597,438, 2,597,439, 2,597,440, 2,614,099, 2,616,877 and 2,636,851 are referred to.
Patent GB-274695-A (GB)
Title: Improvements in or relating to toy bombs or projectors
IPC: A63H37/00
Filed: 1926-11-17
Abstract: 274,695. Craig, A., and Milholland, P. Nov. 17,1926. Detonating toys.-A toy bomb comprises a receptacle B mounted on a base A and provided with an explosive charge E and fuse F, the receptacle containing paper or like streamers M adapted to be expelled by the explosion of the charge. The ends M<1> of the streamers may be attached to the receptacle or to a disc M which normally closes the mouth of the receptacle. The explosive charge is contained in a tube D over which is fitted a second tube M carrying a disc J. Injury to the contents of the receptacle may be prevented by the provision of a second disc L, separated from the disc J by a layer K of paper or felt. The fuse F is bent to lie close to the receptacle and is held in that position by a band G. Toys or other articles may be mixed with the streamers.
Patent GB-732799-A (GB)
Title: Improvements in and relating to machines for cultivating ground
IPC: A01B35/16
Filed: 1952-11-18
Abstract: 732,799. Rotary cultivators. HLAVKA, F., and ASTLE, R. Nov. 17, 1953 [Nov. 18, 1952], No. 29054/52. Class 6 (1). A rotary-cultivator, of the type having assemblies of tines 28 rotatable on a transverse axle 20 but not positively driven, is characterized in that each assembly is mounted within a drum formed by a pair of spaced saucer-like discs 21 and is spring-loaded so as to be movable relatively thereto under spring-action. The discs are slidable but non-rotatable on the hexagonal axle 20 and enclose a pair of sideplates 22 similarly mounted. These form a bearing-boss for the tine-assembly comprising hook-like tines fixed to a four-armed hub 26. The spring is anchored around one arm 27 on the hub and is secured to the discs at 30. The device is supported in a frame 12 coupled to a tractor, the frame having a cover 13 over the tools.
Patent GB-1146174-A (GB)
Title: Modified alkyd resins
IPC: C08G18/71
Filed: 1966-06-29
Abstract: 1,146,174. Alkyd resins. PROGIL and ETABS, ROBBE FRERES. 29 June, 1966 [29 June, 1965], No. 29256/66. Heading C3R. Modified alkyd resins are made by reacting a medium or long drying oil modified alkyd with a monoisocyanate in the substantial absence of water. Reaction is effected in the presence or absence of an inert solvent (e.g. an aromatic hydrocarbon) possibly in the presence of a catalyst (e.g. a cobalt salt, an organo-tin compound, an alkali metal phenate or a tertiary amine) and up to 20% excess of monoisocyanate may be used which excess is distilled off at the end of the reaction. Specified alkyds are those derived by reacting (a) one or more of glycerol, erythritol and pentaerythritol, (b) one or more of phthalic acid and isophthalic acid and (c) one or more of linseed oil, soya oil or safflower oil or their fatty acids. Specified isocyanates are C 2-7  alkyl isocyanates; cyclohexyl, cycloheptyl and cyclo-octyl isocyanates; and phenyl, tolyl and naphthyl isocyanates. Paints and varnishes are made by dissolving the modified alkyd in a liquid vehicle and possibly adding a pigment (e.g. titanium dioxide) or a metallic drier (e.g. a lead/cobalt drier).
Patent GB-207526-A (GB)
Title: Improvements in radio receiving systems
IPC: H04B1/12
Filed: 1923-11-20
Abstract: 207,526. British Thomson - Houston Co., Ltd., (Assignees of Rice, C. W.). Nov. 21, 1922, [Convention date]. Addition to 183,838. Undesired signals, elimininating; thermionic amplifiers and detectors.-Strong interfering signals are eliminated by coupling the aerial to an artificial line having an effective length equal to several wave lengths of the signals, and by coupling the receiving set to the artificial line at two different points, which are so chosen that the interfering signal waves neutralize each other, whilst the desired waves produce a resultant effect in the receiver. As shown in Fig. 1, the aerial 2 is coupled to an artificial line 1 which is open ended so as to produce stationary waves due to reflection from the open end. A coil 3 is coupled to the line near its open end, and is converted in series with a coil 4 coupled to the line at a'point where the interfering signal wave is in opposite phase, this position being found by trial. The two coils are connected to a detector such as a valve 5. In a modification shown in Fig 2, a resistance 6 is connected across the end of the line 1 so as t.o prevent reflection. The line is directly coupled to the aerial 2 and the coil 4 is variably coupled to a coil at the aerial end of the line 1. The coil 3 is adjusted along the line and the degree of coupling of the coil 4 is varied until undesired signals are balanced out. A reaction coil in the plate circuit of the valve is coupled to the aerial or to the grid circuit to compensate for losses in the line. Additional coupling coils may be used to neutralize other interfering waves.
Patent GB-408539-A (GB)
Title: Improvements relating to starting apparatus for internal combustion engines
IPC: F02N99/00
Filed: 1933-10-24
Abstract: 408,539. Starting; stopping. CHANCE BROS. & CO., Ltd., and SPAINK, J. H. ABBINK-, Glass Works, Smethwick, Birmingham. Oct. 24, 1933, No. 29413. [Class 7 (v).] To facilitate starting by means of an electric motor, means for holding open the exhaust or other valve is provided with spring- actuated mechanism for bringing the holding means into action when the engine comes to rest, and electromagnetic mechanism, acting through a spring, for moving the valve-holding means out of action when the engine picks up speed at starting. The valve-holding means (not shown) is operated by levers p, Fig. 2, acted upon by springs q and connected through springs r to levers s on a shaft t, which is connected by a lever u and a link o to an electromagnet n controlled by a centrifugal switch j. A dynamo b serving as a starting motor is supplied from a battery c through an electromagnetic switch e controlled by a hand switch d. If the engine fails to start within a certain time, switches g, h actuated by a thermal or other time-lag device break the circuit of the coil f of the switch e. Normally, however, on the engine attaining sufficient speed, the centrifugal switch breaks the circuit of the switches g, h and closes the circuit of the electromagnet n, the armature of which acts on the valve-holding means through the members o, u, t, s and the springs r. When, due to the rotation of the engine, the normal spring pressure acting on each of the exhaust valves is released from the holding devices of the valve-actuating mechanism, the springs r rock the levers p to move the holding devices to the inoperative position, allowing the valves to close in the normal manner. The fuel pump s is also put into action by the release of a pump valve z by a lever y connected by a link x to one of the levers s. The engine is stopped by opening the switch d, whereby the magnet n is de-energized, so that the fuel pump s is put out of action and the valve-holding devices are brought into action by the springs q. In modifications, (1) the valve of the fuel pump is controlled by a separate electromagnet under the control of the switch j ; (2) a separate electromagnet is provided for each of the valve-holding devices and for the fuel-pump valve.
Patent GB-1352612-A (GB)
Title: Method of dispensing plastics films and apparatus therefor
IPC: B65B43/14
Filed: 1971-06-23
Abstract: 1352612 Dispensing flexible sheet material UNION CARBIDE CORP 23 June 1971 [24 June 1970] 29498/71 Heading A4G [Also in Division B8] Apparatus 10 or 12 for independently and successively dispensing plastics films or bags from a stack thereof comprises a substantially horizontal plate 16 to support the stack, a leash rod 24 over which the stack is folded to produce upper and lower overlapping sections of unequal length, and a pressure plate 26 which abuts the folded section of the stack. The innermost film or bag may be removed by gripping its longer section by hand or by a suction gripper. The leash rod 24 is mounted between two angle members 18, 20 forming side walls and is preferably located above the level of the major portion of the folded stack. The pressure plate 26 is slidably mounted on rods 28, 30 and is biased towards the free ends of the rods by springs (32), 34. The other ends of the rods 28, 30 are fixed to a rotatable rod 36 which enables the plate 26 to be pivoted backwardly to facilitate loading. The plate 16 is slidable on angle members 18, 20 to facilitate loading. The dispensers 10, 12 are adjustably mounted on a vertical support member 14 which may carry a plurality of dispensers horizontally or at angles of up to 45 degrees to the horizontal in a dispensing-end downward direction or up to 30 degrees to the horizontal in a dispensing-end upward direction.
Patent GB-847189-A (GB)
Title: Zone melting apparatus
IPC: C30B13/20
Filed: 1958-09-15
Abstract: In the zone refining of a rod of silicon or <PICT:0847189/III/1> <PICT:0847189/III/2> germanium by the passage therethrough of a molten zone produced by a suitably energized induction coil, a second induction coil energized at a frequency insufficient of itself to melt the rod is placed below the first coil to enable the formation of an enlarged molten zone.  A third coil similar to the second coil may be placed above the first coil.  The second and third coils may have one or more turns.  They may each be upright or inverted frusto-conical shape.  Fig. 2 illustrates two coils 44 and 36, and Fig. 3 three coils 44, 36, and 50.  The rod may be preheated, e.g. by the longitudinal passage of a current therethrough.  A current of 3-5 mc/s may be passed through the first coil, and a current of 500 kc/s through the second and third coils.  Apparatus (Fig. 1, not shown) for supporting the rod is described.